CN210484957U

CN210484957U - Electric hot melting sleeve for welding seam of PE pipeline pipe fitting

Info

Publication number: CN210484957U
Application number: CN201921677537.6U
Authority: CN
Inventors: 吴月兴; 李福胜; 王洪军
Original assignee: Hebei Huidong Pipeline Co ltd
Current assignee: Hebei Huidong Pipeline Co ltd
Priority date: 2019-10-09
Filing date: 2019-10-09
Publication date: 2020-05-08
Anticipated expiration: 2029-10-09

Abstract

The utility model relates to a PE pipeline pipe fitting welding seam department uses electric hot melt cover, it includes: pipe fitting one, electric heat melts cover and pipe fitting two, and electric heat melts the cover and cup joints on pipe fitting one and pipe fitting two to cover in weld joint department, electric heat melts the cover and includes sleeve pipe and electric heat melts the net, the sleeve pipe include the cooperation section with set up at cooperation section both ends and with the hot melt section that cooperation section is the integrated into one piece structure, inlay the dress electric heat melts the net on the hot melt section inner wall, simultaneously, the tip of hot melt section is the kink, the kink is the bellows structure, and is provided with the electric heat melts the net on the kink inner wall, the utility model discloses an electric heat melts cover simple structure, simple to operate can realize the connection of different cast, has strengthened the intensity of welding seam simultaneously, effectually prevents intraductal medium and runs to leak to this application is equipped with the arch between hot melt section and cooperation section, makes the distance between hot melt cover and the pipe fitting equal, has guaranteed the joint.

Description

Electric hot melting sleeve for welding seam of PE pipeline pipe fitting

Technical Field

The utility model belongs to the technical field of the pipe installation technique and specifically relates to a PE pipeline pipe fitting welding seam department uses electricity hot melt cover is related to.

Background

At present, an electric hot melting sleeve is one of the main modes of pipeline connection, and the working principle of the electric hot melting sleeve is as follows: inlay on the inner wall of electric heat melting cover and have the heating wire, during the use, through exposing at two outside electrodes of hot melting cover with the heating wire with electric fusion welding machine be connected and circular telegram, through the heating effect of heating wire, the inboard hot melt adhesive of hot melting cover melts, bonds at the tip of PE pipeline then, realizes the purpose of pipe connection. However, the hot melt sleeves currently used have significant drawbacks in use: the pipe diameter of hot melt cover all is greater than the pipe fitting pipe diameter usually, can't guarantee that the distance between hot melt cover and the pipe fitting is the same for the hot melt is connected inhomogeneous, makes the compound effect greatly reduced, simultaneously, when the pipe fitting of connecting for special-shaped pipe fittings such as return bend and reducing pipe, the hot melt cover can't change the shape, thereby makes between hot melt cover and the pipe fitting space uneven, makes the hot melt degree inhomogeneous, reduces the compound effect.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model discloses a PE pipeline pipe fitting welding seam department uses electricity hot melt cover.

The utility model provides a PE pipeline pipe fitting welding seam department uses electric hot melting cover, it includes: the electric heating melting sleeve comprises a matching section and a hot melting section which is arranged at two ends of the matching section and is of an integrated structure with the matching section, and the electric heating melting net is embedded in the inner wall of the hot melting section.

Further, the second pipe fitting is a straight pipe, the first pipe fitting is a T-shaped tee, a straight pipe section with the height larger than or equal to 30mm is arranged at the end of the branch pipe, and the length and the width of the electric hot melting sleeve are 50 mm.

Furthermore, the first pipe fitting and the second pipe fitting are pipe sections forming the shrimp waist elbow, and the length of the electric hot melting sleeve is 90 mm.

Further, the second pipe fitting is a straight pipe, the first pipe fitting is a reducing pipe, a straight pipe section with the length being more than or equal to 50mm is arranged at the end of the first pipe fitting, and the width of the electric hot melting sleeve is 50 mm.

Furthermore, the inner diameter of the sleeve is 15-20mm larger than the outer diameter of the pipe fitting I or the pipe fitting II.

Furthermore, elastic bulges are arranged on the inner wall, intersected with the hot melting section, of the matching section along the circumferential direction of the matching section, and the tops of the bulges are abutted to the surfaces of the first pipe fitting and the second pipe fitting.

Further, the protrusion is an annular protrusion.

Furthermore, the end part of the hot melting section is a bending part, the bending part is of a corrugated pipe structure, an electric hot melting net is arranged on the inner wall of the bending part, the electric hot melting net is attached to the inner wall of the bending part, and the valley folding part inner wall between the adjacent corrugated structures of the bending part is embedded.

Advantageous effects

The utility model discloses a PE pipeline pipe fitting welding seam department uses electricity hot melt cover, the hot melt sleeve pipe of this application is seamless hot melt sleeve pipe box, compare in ordinary hot melt sleeve pipe, the seamless pipe can bear bigger pressure, joint strength is higher, it sets up elastic arch to follow cooperation section girth direction on the crossing inner wall of cooperation section and hot melt section simultaneously, guarantee the distance between hot melt cover and pipe fitting when the installation, prevent that the laminating degree is different, lead to the joint strength difference, influence the normal use of pipe fitting, simultaneously, annular arch is compared in intermittent arch, intensity is higher, can be better with the pipe fitting butt in the arch, prevent to lead to the gap distribution between pipe fitting and the hot melt cover uneven because protruding distribution is uneven, thereby make joint strength reduce, take place to run, leak the phenomenon of medium, the hot melt sleeve of this application still is equipped with the kink, can laminate at the return bend better, the return bend, On pipe fittings such as reducing pipe, make the laminating effect of hot melt cover better, ensured the joint strength of pipe fitting.

Drawings

FIG. 1 is a schematic view of a connection structure of a T-shaped three-way pipe and a straight pipe in the present invention;

FIG. 2 is a schematic view of a connection structure of a reducing pipe and a straight pipe in the present invention;

FIG. 3 is a schematic view of the connection structure of the middle shrimp waist tube and the shrimp waist tube;

fig. 4 is a partial enlarged view of the part a of the present invention.

Legend: 1. a first pipe fitting; 2. electric hot melting sleeve; 21. a sleeve; 211. a mating segment; 2111. a protrusion; 212. a hot melting section; 2121. a bending section; 21211. a valley position; 21212. a peak position; 22. an electric hot melting net; 3. and a second pipe fitting.

Detailed Description

The following is a further description of the present invention with reference to the following examples, but not limited to the description.

As shown in fig. 1-3, an electric melting sleeve for a welding seam of a PE pipe fitting comprises: the pipe fitting comprises a first pipe fitting 1, an electric hot melting sleeve 2 and a second pipe fitting 3, wherein the first pipe fitting 1 and the second pipe fitting 3 are subjected to hot melting welding, the electric hot melting sleeve 2 is sleeved on a welding seam between the first pipe fitting 1 and the second pipe fitting 3, the electric hot melting sleeve 2 comprises a sleeve 21 and an electric hot melting net 22, the sleeve 21 comprises a matching section 211 and a hot melting section 212 which is arranged at two ends of the matching section 211 and is in an integrated structure with the matching section 211, the electric hot melting net 22 is embedded on the inner wall of the hot melting section 212, when the pipe fitting is connected through a pipeline, hot melt adhesive on the inner side of the seamless hot melting sleeve is melted under the heating action of the electric hot melting net 22 and then is bonded to the end part of the PE pipeline, and the electric hot melting sleeve 2 and the second pipe fitting 3 are connected together, specifically, when the second pipe fitting 3 is a straight pipe, the first pipe fitting 1 is a T-; when the pipe fitting 1 and the pipe fitting 3 are pipe sections forming the shrimp waist elbow, the width of the electric hot melt sleeve 2 is 90 mm; when the pipe fitting II 3 is a straight pipe and the pipe fitting I1 is a reducing pipe, the end part is provided with a straight pipe section with the length being more than or equal to 50mm, and the width of the electric hot melting sleeve 2 is 90 mm; the inner diameter of the sleeve 21 is 15-20mm larger than the outer diameter of the pipe fitting I1 or the pipe fitting II 3, the straight pipe part is arranged on the reducing pipe and the T-shaped tee pipe fitting, so that the electric melting sleeve 2 can be better attached to the pipe fitting I1, when the shrimp waist pipe is connected, the width of the electric melting sleeve 2 is 90mm, the early bending part is better attached, larger gaps are prevented, meanwhile, the outer diameter of the electric melting sleeve 2 is 15-20mm larger than the outer diameters of the pipe fitting I1 and the pipe fitting II 3, so that the electric melting sleeve 2 can be more conveniently and rapidly installed, if the outer diameter is smaller than 15mm, the electric melting sleeve 2 and the pipe fitting I1 and the pipe fitting II 3 are inconvenient to install, meanwhile, the pipe fitting I1 can be melted together during hot melting, the service life of the pipe fitting I1 is influenced, if the outer diameter is larger than 15mm, the electric melting sleeve 2 cannot be tightly attached to the pipe fitting I1 and the pipe fitting II 3, greatly reduced connection effect, when heating the hot melt, the part of hot melt is the part of pipe fitting two 3, has avoided the part of mechanical tubes for laminating that heating back electrothermal welding cover 2 can be better is on pipe fitting two 3 surfaces, has avoided the defect that the junction joint strength difference brought, has improved sealed effect, makes two pipe fitting 1 and pipe fitting two 3 connect more firmly.

As shown in fig. 4, in order to position the heat-melting section 212 more accurately, an elastic protrusion 2111 is arranged on the inner wall of the intersection of the matching section 211 and the heat-melting section 212 along the circumferential direction of the matching section 211, the top of the protrusion 2111 abuts against the surfaces of the first pipe fitting 1 and the second pipe fitting 3, the protrusion 2111 is an annular protrusion, and compared with an intermittent protrusion, the strength is higher, the first pipe fitting 1 and the second pipe fitting 3 can be abutted against the protrusion 2111 better, so that an even gap exists between the second pipe fitting 3 and the electric melting sleeve (2), the subsequent shrinkage is the same, the same effect as the connection strength is achieved, meanwhile, the phenomenon that the second pipe fitting 3 and the heat-melting sleeve cannot be tightly connected due to uneven distribution of the protrusion 2111 is prevented, the connection strength is reduced, medium leakage and medium leakage are caused, and the service life is shortened.

As shown in fig. 1, the end of the fuse segment 212 is a bent part 2121, the bent part 2121 is a bellows structure, and the inner wall of the bending part 2121 is provided with an electric melting net 22, the electric melting net 22 is attached to the inner wall of the bending part 2121, and is fitted on the inner wall of valley 21211 between adjacent corrugations of the bent part 2121, the bent part 2121 has a position corresponding to peak 21212, so that the bent part 2121 can be bent and extended normally, when the length of the fuse section 212 cannot meet the connection requirement of the first pipe fitting 1 and the second pipe fitting 3, the bending part 2121 can be stretched to lengthen the length of the fuse section 212, thereby the connection between the electric melting sleeve 2 and the pipe fitting 1 is firmer, and meanwhile, when the pipe fitting 1 and the pipe fitting 3 are shrimp waist pipes, the bending part 2121 can be bent, thereby better laminating is on pipe fitting one 1 and pipe fitting two 3 of shrimp waist pipe, with the connection that the hot melt pipe box is more firm on pipe fitting one 1.

It is to be understood that the above-described embodiments of the present invention are merely examples provided for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Not all embodiments are exhaustive. All obvious changes or variations led out by the technical scheme of the utility model are still in the protection scope of the utility model.

Claims

1. The utility model provides a PE pipeline pipe fitting welding seam department uses electric hot melting cover, it includes: pipe fitting (1), electric hot melt cover (2) and pipe fitting two (3), hot melt welding between pipe fitting (1) and pipe fitting two (3), electric hot melt cover (2) cup joint on the welding seam between pipe fitting (1) and pipe fitting two (3), its characterized in that: the electric hot melting sleeve (2) comprises a sleeve (21) and an electric hot melting net (22), the sleeve (21) comprises a matching section (211) and hot melting sections (212) which are arranged at two ends of the matching section (211) and integrated with the matching section (211), and the electric hot melting net (22) is embedded on the inner wall of each hot melting section (212).

2. The electric hot melting sleeve for the welding seam of the PE pipeline pipe fitting as claimed in claim 1, wherein: the second pipe fitting (3) is a straight pipe, the first pipe fitting (1) is a T-shaped tee, a straight pipe section with the height larger than or equal to 30mm is arranged at the end of the branch pipe, and the width of the electric hot melting sleeve (2) is 50 mm.

3. The electric hot melting sleeve for the welding seam of the PE pipeline pipe fitting as claimed in claim 1, wherein: the first pipe fitting (1) and the second pipe fitting (3) are pipe sections forming the shrimp waist elbow, and the width of the electric hot melting sleeve (2) is 90 mm.

4. The electric hot melting sleeve for the welding seam of the PE pipeline pipe fitting as claimed in claim 3, wherein: the second pipe fitting (3) is a straight pipe, the first pipe fitting (1) is a reducing pipe, a straight pipe section with the length being more than or equal to 50mm is arranged at the end of the reducing pipe, and the width of the electric hot melting sleeve (2) is 50 mm.

5. The electric hot melting sleeve for the welding seam of the PE pipeline pipe fitting as claimed in claim 1, wherein: the inner diameter of the sleeve (21) is 15-20mm larger than the outer diameter of the pipe fitting I (1) or the pipe fitting II (3).

6. The electric hot melting sleeve for the welding seam of the PE pipeline pipe fitting as claimed in claim 1, wherein: elastic protrusions (2111) are arranged on the inner wall, intersected with the hot melting section (212), of the matching section (211) along the circumferential direction of the matching section (211), and the tops of the protrusions (2111) abut against the surfaces of the first pipe fitting (1) and the second pipe fitting (3).

7. The electric hot melting sleeve for the welding seam of the PE pipeline pipe fitting as claimed in claim 6, wherein: the protrusion (2111) is an annular protrusion.

8. The electric hot melting sleeve for the welding seam of the PE pipeline pipe fitting as claimed in claim 1, wherein: the end part of the hot melting section (212) is a bent part (2121), the bent part (2121) is of a corrugated pipe structure, an electric hot melting net (22) is arranged on the inner wall of the bent part (2121), the electric hot melting net (22) is attached to the inner wall of the bent part (2121) and is embedded in the inner wall of a valley folding part (21211) between adjacent corrugated structures of the bent part (2121).